Gas burner



H. w. PARTLow April 28, 192/5.

GAS BURNER Filed Sept. 20, 1924 INVENTOR. ;{wmdmm Maxa/zw.

HTTORNEY- Aheatine' an oart of the burner.

Patented Apr. 28, 1925.

P TEN'T OFJFI CIE HOWARD W. PARTLOW, O'F-UTICA, NEW YORK.

GAS BURNER.

Application file'd September 20, 1324. 'Serial No. 738,864.

To (LZZ whom. it may Gomera' Be it known that I, lfIowAno NV. PAn'rLow, a citizen of the United States, residing Aat Utica, in the county of Oneida and VState of New York, have invented certain new and useful lmprovemen'ts in Gas Burners, of which the following is a specification.

This invention relateslto blast burners, in which air under pressure indnces the gas and produces a mixture from which complete coinbustion ensues.

The object of the invention is to provide a burner of the class, comprisingan elongated cylindrical body normally open throughout its "length, one end'of the body being` closed by a threadedicap or head'of novel design, lwhich is provided with sepa' rate gas and air ontlet passages. Interiorly the body is formed with a relatively large gas chamb'er, and with a concentric lair chamber, the saidchambers 'being non-comnnmicating, and beingl arrangedto dischargre their contents through the said head independently; the arrangement of the burner being` such that the combining and mixing of the gasand air, as well'as the cornbustion of the mixture are efectedentirelyloutside of the burner body, thereby obviating all danger of back-firing, or of injuriously i And a further object is toprovide a novelarrangernent of the airand gas discharges, vwhereby alternate' jets of air and `gas are delivered through a circular 'row of orifices formed in the outer end of the head,'the said orifices being; located in a semi-spherical cavity which is open to the` atmosphere, and in which the mixing and combustion of the gaseous 1fuel takes place; the said cavity being` equipped with a hollow conical defiector, which is disposed concentrically within the circle of discharge openini's, against which the air and gas ilnpinge radially, and when bnrned produces an annular flame; the said defiector receiving' air di' rectlyV from the air Chamber of the body,`by which the deflector is cooled; the said air being` discharg'ed by the deflector in the line of the axis of the annular lame, and near enough to the primary zone of coinbustion to effect the colnbustion of any unconsumed ;nas that may be carried alone` with the flame.

I attain these objects by the means set forth in the detailed description which follows, and as -illustrated by the accompanyi'nr drawing, in which- Figure l isia side elevation of the complete burner embodying my invention. Fig. 2 'is a central Vertical longitudinal section, taken on line 2-2 of Fig. 4;. Fig. 3 is a view of the inner end of the head. Fig. l is an outer end view of the same. And Fig. 5 is a reduced right-end elevation of the body with the head removed.

In the drawing, 2 represents4 the main body of 'the burner, which is 'hollow throughout its length. According to the drawing, the left end of the body forined witlra relatively large air chamber 3,which. is threaded Vat 3' for attachment to'any suitable air-supply, and `in which is rotatably mounted a butterfly damper or throttle 4:, for Vregulating the Volume of air that may pass through the body. The -dampcr 4 v`is operatively supported by a shaft Li', whichhas its bearing in a boss 2', the upper end of the Shaftbeing' fitted with a head 43, which is rotatable by a handle l-b. The damper is -shown open in Fig. V2 and is closed in 5. At the rightof the damper 4, ithe air chamber is 1reduced, as at'lfl, and Vthis portion of the chamber `lis surrounded by an annular gas chamber 6, whiclrreceives 'the gas through an opening' in ;the boss 2a, into whicha supply pipe, as 6', may be inserted (see Fig. 5).` The right-hand end of the body 2 is externally vthreaded and hscrews into a threaded socket 7 of a head 7, the bottom of saidsocket preferably being lfiat,'and when the body and head are assenibled, Aas shown in Figs. l and 2, the said parts are preferably brought tightly togethenso as to preventany leakage ofthe gas from the Chamber G into the air chamber 3a, and vice `versa. The outer or free end of the head 7 is fpreferably forined with a relatively large `semi-spherical cavity or recess 7a,-and with a concentric longitudinal opening' 7b, which aligns axially with the air 'chaxnber 3, and into which is disposed a hollow conical deflector or part 8, through which a column of air may pass from the chainber 3a. The wall of the cavity T* is provided with a circular row of perforations or orifices S) andlO, which are preferably arranged in alternate orderl` as best seen in Fig'. ll, The bottom of the socket 7' is formed with two concentric circular rows of'outlet opcnings, as 9' and 10', both of said series of outlets being connected with the orifices 9 and 10 by means of angular passages for respectively conducting gas and air from the chambers 6 and 8a to the recess 7*, as best seen in Fig. 2. The air is preferably forced through the chambers 3a by any suitable pressure, and is discharged through the several orifices 10 simultaneously with the gas which is discharged through the outlets 9, the discharge from said passages being eifected at an angle for directing both the air and gas against the defiector 8 at a point well within the relatively broad and deep cavity 7a, as indicated by the arrows in Fig. 2. The mixture of gas and air is ignited within the cavity 73', which constitutes the primary point of combustion, the said cavity affording adequate shelter from atmospheric currents that may circulate around and across the outer face of the head 7. The annular fiame which results from this combustion is then projected axially away from the cavity 7a, and maj7 be directed towards or against any surface or part to be heated, similar to the fiame of the common blow-torch. The defiector 8 being holloW and rec'eiving air direct from the chamber 3a, is not liable to become overheated, and besides the jet of air from the detlector being discharged entirely within the annular fiame, becomes mixed with any unconsumed gas that may escape combustion m the cavity 7.

This novel provision tends to complete the eombustion, thereby conserving gas, .is well as materially increasing the heating capacity of the burner.

The bottom side of the body 2 is formed with a hollow boss 2b, which is preferably tightly closed by a plug 12. The opening through this boss is provided mainly for supporting` the cores during the casting operation. The bottom of 'the body is also provided with another boss Qc, which is formed with a socket adapted to receive a standard or other means of support (not shown).

My blast burner, constructed and operated as herein shown and described is eX- tremely simple and economical and is very effective. By establishing the mixing and burning points of the gas and air entirely outside of the body and its head, there is no danger of the burner back-firing, and owing to the peculiar disposition and arrangement of the gas and air passages 9 and 10, which are non-communicating, it is impossible for the air to enter the gas Chamber 0, in order to effect a mixture that might explode within said Chamber, and it is equally impossible for the gas to reach the air Chamber 8 and cause an explosion therein. My burner may be operated at its full capacity with maximum air pressure2 or it maj' be operated at its lowest capacity by simply manipulating the damper 4;, and by suitably regulating the gas-supply through the pipe 6'.

Having thus described what I claim, is-

1. In a burner, anlelongated hollow body having an air chamber extending aXially therethrough and a gas chamber surrounding the discharge end of the air chambcr and having an inlet opening, a detachable head closing said discharge end having concentric circular rows of outlets registering respectively with the gas and air chambers adapted to conduct the gas and air to a mixing point outside the body and head, and a defiector projecting outwardly from the center of the head against which the gas and air impiinge in radial jets and around which the mixture is burned, said deflector being hollow and being cooled by air derived from the air Chamber independently of said outlets.

2. In a gas burner, a cylindrical body having an air chamber extending axially therethrongh and an annular gas Chamber extending partway into the body and surrounding the air Chamber, the corresponding ends of the said chambers being open, a head for closing the open ends of said chambers, said head having separate passages arranged in concentric circular rowS for conducting the air and gas outside of the head where the gas and air are mixed and burned, and a deflector projecting outwardly from the head and being surrounded by the outlet orifices of said passages against which the air and gas impinge in converging jets.

3. A blast burner, comprising an elongated bodv having a central longitudinal air Chamber and an annular gas Chamber, a head for closing the eorresponding ends of the body chambers and having a semi-spherical recess in its outer face and an opening concentric to said recess, the inner face of the head being formed with concentric rows of angular passages adapted to independently conduct air and gas from said chambers towards said recess, the Outlet orilices of said passages being arranged in alternate order in a single circular row, and a tubular deflector filling the central opening of the head against which the gas and air are discharged in alternate radial jets and become mixed, said deflector being hollow and being cooled by air received directly from the air chamber, the said air iinally being discharged into the flame beyond said recess.

4. A gas burner comprising an elongated cylindrical body having a central air chamber extending therethrough and an annular gas chaniber surrounding one end of the air Chamber, a damper for controlling the volume of air passing through the body` my invention,

and a head closing the oorl'espondng ends of the 21h' and gas ehznnbers, said head hav ng a seln-sphercel reeess in its outer face :md a tht'eaded socket fecng the body, said socket being provided With Concentrio rows of ducts l'egstering Wit-h and adepted to independently condnct the gas and air from said chmnbel's to a circnlzu' row of orfices in altel'nztte jets, the said ducts being` (mgnlzu' and adapted to dseharge said jets towerds the center of said recess.

5. A gas bul'ner colnprsing a oyhnch'cal body having a central longitndinal .ir chnn'1be1' extending' therethrongh, a` throttte in one end of said Chamber, said body being forlned with an ennuhtr gas Chamber sm:rounding` the :tir ehzunber beyond the throtfle and having a gas inlet, a oap for closing the opposte end of the body and fol' pl'eventing the mnglil'xg of the air and gas Within the body., the outel` face of said Cap having' a eavity, and said Cap having pessages fol` conddeting the air and gas from the respective chmnbers into the czwi'ty to bo mixed and consmned outside the body and cup, the dischare'e otlfices of said passng'es being' al't'enped in alternate order, and nn elongated hollow defiector extending on'tWJ1'(Uf1 from the cent-el1 of said cavty ndapted for dil'ec'tinp; the flzune away from the eep and folI d'ischzu'ging a jet of air into the 'flzune beyond said cwty.

In testilnony Whereof I lny signature.

HOYVABD V17. PARTLOV. 

